ASTM A312 201 Welded Stainless Steel Pipe For Industrial Applications

 

 

ASTM A312 TP201 welded stainless steel pipe is manufactured from 201 austenitic stainless steel strip or sheet and formed into pipe before longitudinal welding. It provides a combination of strength, formability, weldability, and general corrosion resistance for industrial and engineering applications.

JUDE STEEL supplies TP201 welded stainless steel pipe in different outside diameters, wall thicknesses, and lengths. Custom cutting, surface finishing, dimensional inspection, PMI, and EN 10204 3.1 MTC documentation can be arranged for bulk industrial orders.

 

 

Item	Specification
Product	201 Welded Stainless Steel Pipe
Grade	201 / TP201
UNS	S20100
Standard	ASTM A312 / ASME SA312
Manufacturing	Welded
Pipe Type	Longitudinal Welded Pipe
Material	Austenitic Stainless Steel
Surface	Mill, Polished, Brushed or Custom
Length	Standard or Cut-to-Length
Inspection	Dimensional, Surface, PMI and Other Requirements
Certification	EN 10204 3.1 MTC Available

 

 

Sizes can be supplied according to project requirements. Common dimensions include:

Outside Diameter (OD)	Wall Thickness (WT)	Length
10 mm	0.8 mm	1000–6000 mm
12 mm	1.0 mm	1000–6000 mm
16 mm	1.0–1.5 mm	1000–6000 mm
20 mm	1.0–2.0 mm	1000–6000 mm
25 mm	1.0–2.5 mm	1000–6000 mm
32 mm	1.2–3.0 mm	1000–6000 mm
38 mm	1.5–3.0 mm	1000–6000 mm
50.8 mm	1.5–4.0 mm	1000–6000 mm
63.5 mm	2.0–4.0 mm	1000–6000 mm
76.2 mm	2.0–5.0 mm	1000–6000 mm
101.6 mm	2.0–5.0 mm	1000–6000 mm
114.3 mm	2.0–6.0 mm	1000–6000 mm

 

 

Typical chemical composition requirements for 201 stainless steel should be confirmed against the applicable material specification and MTC.

Element	Typical / Specified Range
Carbon (C)	≤ 0.15%
Manganese (Mn)	≤ 7.50%
Silicon (Si)	≤ 1.00%
Phosphorus (P)	≤ 0.060%
Sulfur (S)	≤ 0.030%
Chromium (Cr)	16.0–18.0%
Nickel (Ni)	3.5–5.5%
Nitrogen (N)	≤ 0.25%

 

Typical mechanical properties for 201 stainless steel are shown below. Final values depend on the product condition and applicable standard.

Property	Typical Requirement
Tensile Strength	≥ 515 MPa
Yield Strength	≥ 275 MPa
Elongation	≥ 40%
Hardness	As specified by condition
Material Condition	Annealed / As Ordered

 

The welded pipe manufacturing process generally includes:

Raw Material Inspection
Stainless steel strip or sheet is checked for grade, thickness, surface condition, and dimensional requirements.

Slitting and Preparation
The raw material is slit to the required width for pipe forming.

Roll Forming
Stainless steel strip is gradually formed into a cylindrical tube.

Longitudinal Welding
The formed strip is welded along the longitudinal seam using a controlled welding process.

Weld Treatment
The weld area can be treated according to the required surface and dimensional specifications.

Sizing and Straightening
The pipe is sized to achieve the specified outside diameter and straightness.

Cutting
Pipes are cut to standard or customer-specified lengths.

Inspection and Testing
Dimensional, visual, surface, weld, and other specified inspections are performed before shipment.

 

 

Different surface conditions can be supplied depending on the intended application.

Finish	Description	Typical Application
Mill Finish	Standard industrial surface	General industrial use
Polished	Smooth mechanically polished surface	Equipment and visible installations
Brushed	Directional satin surface	Architectural and decorative applications
BA	Bright annealed surface	Decorative and equipment applications
Custom	According to customer specification	Project-specific requirements

 

 

ASTM A312 TP201 welded stainless steel pipe can be used in applications where the combination of strength, formability, weldability, and general corrosion resistance is suitable.

For corrosive chemical, marine, or high-temperature service, the material grade should be selected according to the actual operating environment.
 

 

Item	201 Stainless Steel	304 Stainless Steel
Grade	TP201	TP304
Nickel Content	Lower	Higher
Corrosion Resistance	Good for general environments	Generally higher
Strength	Relatively high	Good
Formability	Good	Excellent
Cost Consideration	Generally more economical	Generally higher
Typical Use	General industrial and architectural applications	Chemical, food, industrial and architectural applications
Selection	Suitable when service conditions permit	Preferred for more demanding corrosion environments

 

 

Quality inspection can be arranged throughout the manufacturing and supply process.

Inspection Item	Purpose
Chemical Analysis	Verify material composition
Mechanical Testing	Verify tensile and yield properties
OD Measurement	Check outside diameter
Wall Thickness Measurement	Verify pipe thickness
Length Inspection	Confirm supplied length
Surface Inspection	Check surface condition
Weld Inspection	Verify longitudinal weld quality
PMI	Confirm material grade
Visual Inspection	Identify visible defects
Third-Party Inspection	Independent quality verification

 

JUDE STEEL focuses on bulk stainless steel supply for industrial and engineering projects. Customers can request quotations based on grade, ASTM standard, OD, wall thickness, length, quantity, surface finish, inspection requirements, and delivery destination.
 

Q1. What standard is used for TP201 welded stainless steel pipe?

A: ASTM A312 is the specified standard for TP201 stainless steel pipe when the product is ordered under that specification. The purchase order should clearly define the grade, manufacturing type, dimensions, testing, and applicable requirements.

Q2. Is ASTM A312 TP201 pipe suitable for industrial piping?

A: It can be used for industrial piping and equipment applications where the corrosion resistance and service performance of 201 stainless steel meet the project requirements.

Q3. Can you supply custom wall thickness?

A: Yes. Custom wall thickness can be discussed according to the required OD, manufacturing process, dimensional tolerance, and applicable specification.

Q4. Can TP201 welded pipe be cut to specific lengths?

A: Yes. Cut-to-length service can be arranged according to the customer's dimensional schedule.

Q5. Can you provide an EN 10204 3.1 MTC?

A: Yes. An EN 10204 3.1 MTC can be provided according to the purchase order and applicable inspection requirements.

Q6. Can I request PMI inspection?

A: Yes. PMI can be arranged when material-grade verification is required.

Q7. What information should I provide for a quotation?

A: For an accurate quotation, provide grade, standard, outside diameter, wall thickness, pipe length, quantity, surface finish, MTC/inspection requirements, and destination port or delivery location.

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